Water saver for a toilet flush system



FIG. 1 is a top perspective view of a water saver for a toilet flush system showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for water saver for a toilet flush system, as shown and described. 